/**
 *   Licensed to the Apache Software Foundation (ASF) under one
 *   or more contributor license agreements.  See the NOTICE file
 *   distributed with this work for additional information
 *   regarding copyright ownership.  The ASF licenses this file
 *   to you under the Apache License, Version 2.0 (the
 *   "License"); you may not use this file except in compliance
 *   with the License.  You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */
package com.qlangtech.tis.manage.spring;

import com.qlangtech.tis.TisZkClient;
import com.qlangtech.tis.pubhook.common.RunEnvironment;
import org.apache.solr.common.SolrException;
import org.apache.solr.common.cloud.TISZkStateReader;
import org.apache.solr.common.cloud.ZooKeeperException;
import org.apache.zookeeper.KeeperException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author 百岁（baisui@qlangtech.com）
 * @date 2015年10月13日 下午5:08:51
 */
public class ClusterStateReader extends EnvironmentBindService<TISZkStateReader> {

  private ZooKeeperGetter zooKeeperGetter;

  private static final Logger LOG = LoggerFactory.getLogger(ClusterStateReader.class);

  @Override
  protected TISZkStateReader createSerivce(RunEnvironment runtime) {
    try {
      TisZkClient zkClinet = (TisZkClient) zooKeeperGetter.getInstance(runtime);
      final TISZkStateReader zkStateReader = new TISZkStateReader(zkClinet.getZK());
      zkClinet.addOnReconnect(() -> {
        try {
          zkStateReader.createClusterStateWatchersAndUpdate();
        } catch (KeeperException e) {
          LOG.error("A ZK error has occurred", e);
          throw new ZooKeeperException(SolrException.ErrorCode.SERVER_ERROR, "A ZK error has occurred", e);
        } catch (InterruptedException e) {
          // Restore the interrupted status
          Thread.currentThread().interrupt();
          LOG.error("Interrupted", e);
          throw new ZooKeeperException(SolrException.ErrorCode.SERVER_ERROR, "Interrupted", e);
        }
      });
      zkStateReader.createClusterStateWatchersAndUpdate();
      return zkStateReader;
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  public void setZooKeeperGetter(ZooKeeperGetter zooKeeperGetter) {
    this.zooKeeperGetter = zooKeeperGetter;
  }
}
